Comment 4 for bug 1444567

I have found the culprit. I have also installed the xdg-user-dirs-gtk package, which automatically runs xdg-user-dirs-gtk-update which creates a ~/.config/gtk-3.0/bookmarks file with the following content:

file:///home/ariszlo/Dokumentumok
file:///home/ariszlo/Zen%C3%A9k
file:///home/ariszlo/K%C3%A9pek
file:///home/ariszlo/Vide%C3%B3k
file:///home/ariszlo/Let%C3%B6lt%C3%A9sek

This is how to reproduce the bug:

1) Remove ~/.config/gtk-3.0/bookmarks
2) Install xdg-user-dirs-gtk and then run xdg-user-dirs-gtk-update

But the good news is that adding a directory to the bookmarks with PCManFM fixes the bookmarks file. Add e.g. the "Sablonok" (Templates) directory and all will be fixed. The new content of ~/.config/gtk-3.0/bookmarks will be like this:

file:///home/ariszlo/Dokumentumok Dokumentumok
file:///home/ariszlo/Zen%C3%A9k Zenék
file:///home/ariszlo/K%C3%A9pek Képek
file:///home/ariszlo/Vide%C3%B3k Videók
file:///home/ariszlo/Let%C3%B6lt%C3%A9sek Letöltések
file:///home/ariszlo/Sablonok Sablonok

As you can see, PCManFM adds display labels after the percent encoded directory names.